Radiation unit and base station antenna

The invention provides a radiation unit and a base station antenna. The radiation unit comprises a substrate and a microstrip line. Wherein the substrate comprises a main board body, a plurality of bending units and a plurality of feed sheets; the main board body is located in the center area of the substrate; the plurality of bending units are located at the edge part of the substrate and are distributed in a polarized orthogonal manner; the bending units are connected with the edge of the main board body, and the included angles between the bending units and the main board body are a first preset included angle; a through hole is formed in the main board body; the feed sheets are connected with a connecting part between the through hole and the main board body, and included angles between the feed sheets and the main board body are a second preset included angle; and the plurality of feed sheets are connected through the microstrip line and are used for feeding the radiation unit. According to the invention